Inflatable building block cube



FIG. 1 is a perspective view showing my new inflatable building blockcube design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a top view thereof; and,

FIG. 7 is a bottom view thereof.

The broken lines shown are included for the purpose of illustratingportions of the article which form no part of the claimed design.

CLAIM The ornamental design for an inflatable building block cube, asshown and described.